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// Boost.Geometry (aka GGL, Generic Geometry Library)
// Copyright (c) 2015, Oracle and/or its affiliates.
// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
// Licensed under the Boost Software License version 1.0.
// http://www.boost.org/users/license.html
#ifndef BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
#define BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
#include <boost/geometry/algorithms/validity_failure_type.hpp>
namespace boost { namespace geometry
{
// policy that simply keeps (and can return) the failure type
template <bool AllowDuplicates = true, bool AllowSpikes = true>
class failure_type_policy
{
private:
static inline
validity_failure_type transform_failure_type(validity_failure_type failure)
{
if (AllowDuplicates && failure == failure_duplicate_points)
{
return no_failure;
}
return failure;
}
static inline
validity_failure_type transform_failure_type(validity_failure_type failure,
bool is_linear)
{
if (is_linear && AllowSpikes && failure == failure_spikes)
{
return no_failure;
}
return transform_failure_type(failure);
}
public:
failure_type_policy()
: m_failure(no_failure)
{}
template <validity_failure_type Failure>
inline bool apply()
{
m_failure = transform_failure_type(Failure);
return m_failure == no_failure;
}
template <validity_failure_type Failure, typename Data>
inline bool apply(Data const&)
{
return apply<Failure>();
}
template <validity_failure_type Failure, typename Data1, typename Data2>
inline bool apply(Data1 const& data1, Data2 const&)
{
m_failure = transform_failure_type(Failure, data1);
return m_failure == no_failure;
}
validity_failure_type failure() const
{
return m_failure;
}
private:
validity_failure_type m_failure;
};
}} // namespace boost::geometry
#endif // BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
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